[quote=@Turboshitter]
Oh man, Seyrun is gonna be [i]pissed[/i] when she finds out even some backwater cult managed to summon a Servant when she couldn't xD
[/quote]

You fail to see the bigger picture of Seyrun's plan as of now. Since she has Caster on her side she might not even need a Servant, to say the truth.

[quote=@Unoedipal]
<Snipped quote by IncredibleBee>

It being in a Class Container is fine. If you'll be removing a Noble Phantasm, then unless the Personal Skills are just absurd, the only other thing you'll really need to do is lower Class Skills by a rank, in all likelihood. 

You'll basically need the lowest maintenance cost ever, since you won't have Grail Support, which is important as I was explaining yesterday. If the rest of the cult is helping maintain it, that'll help. 
[/quote]

Sey-chan's Advice Corner: "Baka Cult, you need a whole lot of low-lives to do what a single true magus can... baka, baka, baka, What do you think you can accomplish if you don't even understand the foundations upon which you are building a castle? Baaaaka~"